Carbureter.



P. GILLES.

' CARBURETER. APPLICATION FIL'ED' FEB. 11. 1915.

1483,24. i I Patented M:1y

3 S HEETSSHEET WITNESSES:

IN V EN TOR.

ATTORNEY.

P. GILLES.

CARBURETER APPLIC-ATiON FILED.FEB.I7.1EJI5.

3 SHEETS-SHEET 2- I [N VENTOR. Fwy? BY W2 3 v WITNESSES:

A TTORNE Y.

CARBURETER.

APFLICATIQN FILED FEB. 17. 191;

3 SHEETS -SHEET 3- INVENTOR.

A TTORNE Y.

To all whom it may concern:

, Be itknown that I, PIERRE Gi-LLns,'a subject hi the Emperor of Germany, residing in the city of Springfield, county of Hampden, and'State of Massachusetts, have invented, certain new and useful Improvef is a specification.

invention relates to improvement in carbureters andparticularly to carbureters of theucompensatorytype, wherein an auxiliarynozzleifed withfuel at a uniform rate is providedin connection with the usual suction feed nozzle, v a

I am. aware that the compensatory type of carbureter isn ot broadly new and that it is disclosedl'ip various forms in the prior art: 'Ilhese 'eiirbureters operate upon the principle that,anifauxiliary 1' nozzle, which has a constant. supply per unitoftime, will cooperatewithihe.usual nozzle, which depends whollyifor itsufeed *on'athe suction, to produces mixture'having a constant ratio of airto fuel'at-lallengine speeds. "Carbureters of this type have "been successfully andwidely used but-,although theoretically am who of air to fuel is obtained,

ctical matter the theoretical condiot always obtained. It is desirtionsi an o . upply to each nozzle may be vari din- M also awell-known fact that a carburetor Sui ble; forone car will not operate sucully with another unless adjusted. It

refore, desirable to provide, in a carbureter adapted to be used on es o flcars, means whereby the necescljiistments maybe conveniently made. t offlthe invention" is to provide pensa-ting fuel nozzles, means to vary the flow -from the former and independent means tovary the'supply to the latter.

' Anotherobject is to provide in a carbureter o ,jthec'oimiensatory feed type having f feedlnoz'zles, and a floatcontrolled sup- M amber all within a single casing, a

and the devices therein maybe y U or inspection without disturbing the adjusted relation of the devices.

v reter of thewtypef-descrilgd, an improved Specification of Letters Patent.

ments in, Carbureters, of which the following fore,]to provide means whereby dently of the: other so that the d sired ons may be obtained by adjustment.

in a carbiireter having suction feed and com tachable cap, whereby the interior XMfi rth I- bject is toprovide in a carb'u-- suctionmozzle and associated compensating.

UNITED STATES PATENT orr on I ji innnnerntnsaor srmnerrnnn, massacnusn'rrs.

' oamaunn'mn.

Patented Ma 16, 1916.

Application filed February 17, 1915. S erialiflo. 8,723.

nozzle structure of extreme simplicity,

which involvesonly two parts and which is characterized, not only by low cost of manufacture but by convenience and rapidity in assembly and removal of parts.

Other objects and advantages will appear in the description to follow and in the 'annexed claims.

Referring to the drawingsz Figure. 1 is a sectional elevation of a carbureter, illustrative of one embodiment of the invention. Fig. 2 is an exterior elevationalview of thesuction nozzle, shown as removed from the carbureter. Fig. 3 is a detailed view of the means for fastening parts of the carburetor together. Fig. 4 is a top plan view of a modified form of nozzle. Fig.5 is a sectional plan view taken on the line 55. of Fig. 1 and looking in the di- -rection of the arrows.

plan view of Fig. 1. Fig. 7 is a detailed r Fig. 6'is a bottom sectional view of another modification of the suction nozzle. Fig. 8 is a view similarto Fig. 10 is a top plan view of Fig. 9.- Fig. "1.1 is a sectional elevation of a carburetor showing a preferredmodification of the in VGIItIOIl; Fig. 12 1s a partial sectional elevation showing a ,modification 1n the arrangement of the adjusting devices forthe nozzles; and Fig. 13 is a fragmentary sectional plan View taken on the line 13-13 of Fig. 11 and looking in the direction of the arrows. Referring to the drawings in detail and particularly to Fig. 1, 1 designates the' main casing of the carbureter and 2 the.

cover therefor which may be secured by any suitable means to permit ready attach-. ment and detachment when required. A preferred form of: attaching means is indi cated generally at 3, wherein a threaded bolt 4 is arranged to enter an angular slot 6 best shown in Fig. 3 a nut 7 and a head 5 on the boltoperated to draw the parts together in an obvious manner. The gasolene supply chamber is indicated at 8 and mounted therein is theusual float 9 which actuates the needle valve 10, to open or close the passageway 11. Thelatter may be connected to a suitable'supply by a supply pipe 12. Concentrically arranged within, and with re lation to the axis of the casingl is a suction pipe 13 which extends entirely therethrough.

Arranged concentrically within the'pipe 13 is a vaporizing nozzle 14, the lower end of which is securedto the casing 1 by means of the threads 15 engaging the threaded opening 16. The upper end of the-nozzle 14 ter:

minates adjacent the contracted throat 18 of a venturi 19, which is made removable so that other rings may be substituted in order to vary the size of the throat 18 to change 10 the vaporizing effect of the carbureter when required. Located within the vaporizing nozzle 14 is a stem 20 having an axial open- .ing 21 therethrough. The upper end of this opening can be varied by means of a needle valve 22 which is mounted in a threaded opening in the bridge-piece 23 formed integrally with the member 14 as shown in Fig. 2, The upper end 20 of the stem 21 is made slightly smaller in diameter than the internal diameter of the passageway 24, whereby a small annular delivery opening 25 is formed and the lower part of the stem 20 is formed with an enlarged portion 26 which so fits the opening 24 as to form a gasolene tight joint. An orifice 26 in the stem20 above the portion 26 permits fuel to enter the interior 24 of the nozzle 14. The passageway 21communieates with a transverse passageway 27 and the latter in turn registers with apassageway28 which leads,

by meansof the opening 29 into the float chamber 8. The stem 20 is removably secured within the nozzle 14 by means of the threaded end 17, as shown, and is arranged for convenient removal from the base of the carbureter.

The cover 2 is formed with a passageway therethrough which forms an extension of the pipe 13 and mounted therein is, a throttle 31 which is pivotally mounted on a pin 32 whereby the throttle may be operated from the outside by means of a suitable connection in the usual manner.

1 The upper edge of the throttle 31 is formed with a notch 33 which registers with an inlet 'opening 34. This latter is controlled by a needle valve 35 which is integral with a threaded stem 36, and the valve is retained in its adjusted position by means of a spring actuated pin 37 which engages serrations 38. Leading from the opening 34 is a passageway 39 which communicates with the float chamber 8 below the upper end of the vaporizing nozzle 14. r

The objectof the passageways 39, 34, and

' 33 is to permit the motor to be driven at very slow speeds, preferably when the clutch is disconnected, and this is accomplished by closing the throttle 31 to choke ofi practically all of the-flow of the vapors through the throat 18 and confining the flow of gasolene or vapor to the passageways 39, 34, and 33. Stems 20 of different forms may be used within the carbureter shown ln'Figs. 7 8, 9 and 10.

a the tube nozzle 14, as,

around the enlarged P0rtion 40 f thestem. whereby the gasolene flows through th am nular passageway 40, as indicated by the arrows 41, and through the central passage way 21, as indicated by the arrow 42. In this form of nozzle the gasolene, as it issues from the suction nozzle 14 escapes by the annular opening 25 and the small central passage 43. I 7

Referring to- Fig. 8; the stem 20 here shown is constructed the sameas that described in connection with Fig. 7, except that at the upper end the head portion 44, instead of being made circular, is slabbed off, as indicated at 45 in Figs. 4 and 10. This construction provides delivery openings for the fuel and at the same time the stem 20 is held concentrically within the nozzle 14. I

Referring to Figs. 1 and 6, '46 designates'a shutter which is plvotally mounted on the lower end of the casing 1 at 47. The handle normally holds 'the shutter 46in the position shown in Fig. 6, whereby, a full opening for the passage 13 is provided. During starting operations the shutter 46 may be closed or partly closed and the, air drawn in through a tube contain warm air, if desired, to facilitate starting in cold weather.

Referring now to the preferred form of carbureter shown in Fig. 11, 50' designates a removable tube which closely hole-in the casing 1. ,Within this tubular member is a stem 52 which has an passageway 52 therethrough. The upper. end 53 of the stem 52 is formed like that shown in Fig. 8 at 44, so that delivery openngs are provided for. the tube 50. 54 des- 50 (see Fig. 5)- which may fits an axial axialv end of the stem 52 tight fit with the tubular member 50. The stem 52 is secured in the casing l bya threaded lower portion 51. and maybe removed together with the tube 50' when desired by the squared lower end.. 55 is an annular' groove cut into the casing 1 outside to permit the gasolene to readily flow to an aperture 56 which is controlled by means of a needle valve 57 whereby gasowhich has a gasolene leIie may flow from the reservoir 58 through i I l the openings 59 and 56 to the interior of tube 50'. It will also be seen that gasolene can be drawn into the suction pipe 60 through the passage 52 which is connected assh'own to the float chamber by the openings 59 and 59. 61 is a needle valve which controls the flow of gasolene from the passage 52. It is also to be noted that the space above said enlarged portion, a needle valve depending through the suction conduit to control the amount of fuel issuing from said nozzle, and a quickly detachable cap for the upper end of said casing, all constructed and arranged to permit the carbureter to be attached in close proximity to the intake manifold and to,-permit convenient accessibility for inspection and repair;

4. A carbureter, comprising a single casting formed with a fuel supply chamber and a suction conduit extending through said chamber, the axes of the conduit and chamber being in rectangular relation, a tubular nozzle member mountedfin said casting in concentrical relation With the axis of said chamber and extending within said conduit, an'orifice formed in said member, connections formed in said casting between said orifice and said chamber, a main nozzle remova'bly secured within said tubular member in concentrigal relation thereto and arranged tovleave an annular space between the tubular nozzle member' and said main nozzle, an axial fuel passageformed in'the latter, an integral enlarged, portion on the.

- main nozzle constructed to closely fit the base of the tubular'nezzle member, a connection formed in the casting to communic'ate between'said chamber and the base of said axial passage, andan integral head portion formed-on the main nozzle at the top I of the tubular member constructed to form compensatory a delivery opening between the head and the tubular. member, and an opening in said tubular member above said enlarged portion,-

whereby fuel may be delivered at a uniform rate to the tubular member, said nozzle having an integral head portion at the top of said tubular member constructed to form a delivery opening between the head and the member, whereby an auxiliary nozzle ,is formed to deliver fuel in compensatory relation to' the main nozzle, all constructed and arranged so that a double nozzle of the type 'is formed with a two piece structure. v

PIERRE GILLES.

Witnesses:

HARRY W. BowEN, H. E. HARTWELL. 

